Influence of Yeast Products on Rumen Microorganisms,<i>In vitro</i>Degradation and Fermentation of a Diet for Steers

Cobos, M.A.; Valencia, L. H.; Pinos-Rodríguez, Juan Manuel; Munoz, S.; Ramírez, Jorge; Hernández, D.

doi:10.1080/09712119.2010.9707111

Cited by 4 publications

(5 citation statements)

References 14 publications

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“…Only MON-A (Rumensin-200) inoculation resulted in a greater in vitro rumen propionate and reduced acetate and butyrate concentrations. The exact reason why these differences were observed are unknown at this point, but might be related to the potency of the products (Factor A) and/or to the strain of Streptomyces cinnamonensins used for the fermentation of the final product, such as is the case for Saccharomyces cerevisiae ( Cobos et al, 2010 ) and the nonionophore antibiotic virginiamycin ( Sitta, 2016 ). Based on these data, the Experiment 02 was designed and conducted in order to evaluate if these differences also would be observed into an in vivo setting with beef animals consuming a high-concentrate diet.…”

Section: Resultsmentioning

confidence: 99%

“…The reason why MON-B did not improve the production efficiency herein, in Exp. 1, and in Erasmus et al (2008) is unknown at this point, but might be related to the potency of the monensin sodium-containing products (Factor A) and/or to the strain of Streptomyces cinnamonensins used for the fermentation of the final product, such as is the case for the strains of Saccharomyces cerevisiae ( Cobos et al, 2010 ) and the nonionophore antibiotic virginiamycin ( Sitta, 2016 ).…”

Section: Resultsmentioning

confidence: 99%

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Effects of monensin source on in vitro rumen fermentation characteristics and performance of Bos indicus beef bulls offered a high-concentrate diet

Teixeira

Cappellozza

Fernandes

et al. 2019

Translational Animal Science

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In Exp. 1, Brachiaria ruziziensis (11.1 % CP) was inoculated or not with two sources of monensin, resulting in three treatments: 1) no monensin inoculation (CONT), 2) 20 mg of monensin sodium-A/kg of DM (Elanco Animal Health; MON-A), and 3) 20 mg of monensin sodium-B/kg of DM (Shandong Qilu King-Phar Pharmaceutical Co. Ltd.; MON-B). Three rumen-fistulated Jersey steers were offered a cool-season forage-based diet and were used as the rumen inoculum donors. Volatile fatty acids concentrations were evaluated at 0, 6, 12, 24, 30, and 48 h after treatment inoculation. Overall, acetate and butyrate concentrations were reduced in MON-A vs. CONT (P ≤ 0.02), whereas both monensin products reduced Ac:Pr ratio vs. CONT (P ≤ 0.01); however, MON-A also (P = 0.05) reduced the Ac:Pr ratio vs. MON-B. A treatment × hour interaction was detected for rumen propionate concentration (P = 0.01), primarily because MON-A resulted in greater propionate than CONT and MON-B at 24 and 48 h (P ≤ 0.03), but no differences were observed between CONT vs. MON-B (P ≥ 0.27). In Exp. 2, 240 Nellore bulls (initial BW = 363.2 ± 40.9 kg) were ranked and blocked according to initial BW, and within blocks animals were allotted into pens (n = 10 pens/treatment). Pens were randomly assigned into one of three treatments: 1) corn-based diet with no monensin (CONT), 2) CONT plus 28 mg of MON-A/kg of DM, and 3) CONT plus 28 mg of MON-B/kg of DM. The CONT diet was composed of sugarcane bagasse, ground corn, DDGS, urea, and a mineral-vitamin mix. The experimental period lasted 106 d and was divided into a 21-d adaptation period and an 85-d finishing phase. During the adaptation phase, both monensin sources increased (P ≤ 0.01) BW change, ADG, and F:G, as well as reduced DMI variation (P = 0.02). When the entire experimental period was evaluated, no treatment effects were detected for final BW, DMI, and ADG (P ≥ 0.26). Nonetheless, DMI variation was reduced as monensin was included (P = 0.01) and only MON-A improved the efficiency by reducing F:G vs. CONT (P = 0.05) and biological efficiency vs. MON-B (P = 0.05). Additionally, carcass ADG tended (P = 0.10) to be greater for MON-A vs. MON-B, whereas no other differences in the carcass characteristics were observed (P ≥ 0.53). In summary, the source of monensin inoculated in vitro and offered to Nellore bulls during the feedlot phase significantly affected the energetic efficiency and the performance of the animals.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Effects of monensin source on in vitro rumen fermentation characteristics and performance of Bos indicus beef bulls offered a high-concentrate diet

Teixeira

Cappellozza

Fernandes

et al. 2019

Translational Animal Science

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“…Improvements in feed efficiency would positively affect herd productivity even though these beneficial changes, either in production or feed intake, are mild (Schingoethe et al 2004). The ability of yeast products to improve ruminal fermentation (Cobos et al 2010) and digestibility, albeit low, may improve feed efficiency. Depending on environmental conditions (Chaucheyras-Durand et al 2008;Moallem et al 2009), lactation stage (Wohlt et al 1998), and forage, concentrate ratio or diet characteristics (Piva et al 1993), yeast products could have beneficial effects on lactating dairy cows.…”

Section: Introductionmentioning

confidence: 99%

Effects of live yeast supplementation on mid-lactation dairy cows performances, milk composition, rumen digestion and plasma metabolites during hot season

Dehghan-Banadaky

Ebrahimi

Motameny

et al. 2013

Journal of Applied Animal Research

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Effects of live yeast supplementation on mid-lactation dairy cows performances, milk composition, rumen digestion and plasma metabolites during hot seasonFifty-six Holstein cows (36 multiparous and 20 primiparous), that averaged 145923 days postpartum, were used to investigate the supplementing of live yeast (LY) on productivity during hot summer conditions, from July until August 2010. Cows were fed a control diet with or without 4 g of LY (15 )10 9 CFU/g) per cow daily during a five-week period. Cows were milked three times a day and milk yield was recorded daily. Milk samples were also taken weekly for milk composition analysis. Blood samples and rumen liquor samples were taken in two subsequent days during the last week of the experiment. Milk production, 3.5% fat-corrected milk, and DM intake were similar for cows fed on both diets. A greater milk fat percentage was observed for cows fed LY compared to the control (PB0.05). However, milk urea nitrogen concentration in cows fed LY was lower compared to the control (PB0.01). Cows fed LY had greater blood glucose compared to the control (P B0.01). Blood urea nitrogen was lower for cows fed LY compared to the control (P B0.05). Non-esterified fatty acids, bhydroxybutyrate (BHB), triglyceride, total protein, and total cholesterol were similar for both diets. The apparent digestibility of NDF was greater for cows fed LY compared to the control (PB0.05). Rumen parameters such as pH, N-NH 3 , and VFAs were also similar for both treatments. The present results suggested that feeding LY to mid-lactation Holstein cows during heat stress can increase diet cell wall digestibility and improve milk fat percentage.

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“…Regarding the use of products with different strains of Saccharomyces cerevisiae, in concentrated diets, Cobos et al (2010) found diverse results where none of the yeast products studied modified the IVDMD of the diet and the pH of the incubated fluids but at 24 hours reduced lactic acid concentrations and increased the acetate: propionate relation. Also, two of the strains under study increased the population of ruminal microorganisms while the third did not modify it.…”

Section: Resultsmentioning

confidence: 99%

Study of the inclusion of yeasts in the ruminal fermentation of Tifton hay

RODRÍGUEZ¹,

Lucas

Peçanha

et al. 2021

Multi

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This study aimed to evaluate, under in vitro conditions, the effect of the inclusion of yeasts of different species on some fermentation parameters of Tifton hay. The gas production technique was used and the strains evaluated belong to the species: Rhodotorula mucilaginosa, Issatchenkia orientalis, Candida tropicalis, Pichia guilliermondii, and Saccharomyces cereviasiae. The equivalent of 7.0 mg DM of yeasts was added and the presence of living cells in them was in the order of 10 7 cells . mL -1 . The parameters under study were: accumulated gas production, methane, ammoniacal nitrogen concentration and protozoan count. Only the I. orientalis and S. cereviasiae strains stimulated gas production and the inclusion of yeasts did not show an effect on the rest of the parameters under study. It is concluded that the species and strain of yeast have a decisive effect on the ruminal fermentation of fibrous substrates, which reaffirms the importance of selecting the appropriate strains for being used as an additive in ruminant diets, according to the food you want to use.

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Influence of Yeast Products on Rumen Microorganisms,In vitroDegradation and Fermentation of a Diet for Steers

Cited by 4 publications

References 14 publications

Effects of monensin source on in vitro rumen fermentation characteristics and performance of Bos indicus beef bulls offered a high-concentrate diet

Effects of monensin source on in vitro rumen fermentation characteristics and performance of Bos indicus beef bulls offered a high-concentrate diet

Effects of live yeast supplementation on mid-lactation dairy cows performances, milk composition, rumen digestion and plasma metabolites during hot season

Study of the inclusion of yeasts in the ruminal fermentation of Tifton hay

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